Roller bearing



FIG. 1 is a front elevational view of a roller bearing showing our newdesign.

FIG. 2 is a rear elevational view thereof.

FIG. 3 is a right side elevational view thereof.

FIG. 4 is a left side elevational view thereof.

FIG. 5 is a top plan view thereof.

FIG. 6 is a bottom plan view thereof.

FIG. 7 is a cross-sectional view, taken along line 7-7 of FIG. 1.

FIG. 8 is a front perspective view thereof; and,

FIG. 9 is a rear perspective view thereof.

The broken line portions of the design are included to show unclaimedportions and form no part of the claim.

CLAIM The ornamental design for a roller bearing, as shown anddescribed.